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Nitrogen Oxides are created during the combustion process when air (which is 78%
nitrogen, 20% oxygen and 2% inert gases) is broken down or oxygen combines with
nitrogen in the fuel. Nitrogen Oxides are a byproduct of all combustion processes
whether is is gasoline in your car, leaves burning in your backyard, or a power plant
burning oil, coal or trash for fuel. Trash-to-energy plants also create Nitrogen Oxides.
We reduce the amount of nitrogen oxides by utilizing selective non-catalytic
reduction (SNCR) technology. At this plant, we utilize urea injection as our SNCR
technology. We have a permit limit established by the Department of Environmental
Protection of 205 parts per million of Nitrogen Oxides in our emissions (corrected to
7% oxygen) averaged over the day.
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